Edge hole protection device
By designing the edge hole protection device, using components such as fixed rod sets, extended rod sets and connecting cables, the problem of unstable fixing of the safety net in the existing technology is solved, and the protection capability and construction safety of the edge hole opening are improved.
Patent Information
- Application Number
- CN202422153182.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-09-03
AI Technical Summary
In the prior art, the fixing method of the safety net is to tie a rope and fix it, which is troublesome to operate and unstable connection, which poses a safety risk.
A side hole protection device is designed, including a fixed rod group, an extended rod group, a middle connecting cable, a side connecting cable and a fixing assembly. These components form a stable support structure and protective structure to ensure stable fixation and effective protection of the safety net.
The protection capability of the edge opening is improved, the problems of troubles in protection operation and unstable connection are solved, safety risks are eliminated, and safety is ensured during construction.
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Figure CN222949529U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to a protective device for an edge opening. Background Art
[0002] During the construction process, every construction worker faces the safety issues of "four openings and five edges". The so-called "four openings" refer to stair openings, elevator openings, reserved openings and passage openings; the "five edges" refer to the perimeter of balconies, floors, roofs, runways and ramps, and unloading platforms; these edge openings are all dangerous sources of high-altitude falling accidents. According to the "three major injuries" (falling from heights, collapse, and object strikes) that have occurred in the construction industry in recent years, high-altitude falling accidents have the highest incidence rate and are extremely dangerous. Therefore, the safety protection of edge openings or other dangerous building openings is particularly important. During construction, the edge openings of the exterior wall are often built in the later stage, so safety nets need to be laid out at the edge openings for protection.
[0003] Relevant technical personnel engaged in construction found in their work that in the existing technology, the safety net is usually fixed by directly pulling ropes and tying knots. The fixing operation is troublesome, the connection structure is unstable, and it is easy to loosen and fall off. For this reason, we propose a protective device for edge openings. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the existing safety net is fixed by knotting a pull rope, which is cumbersome to operate and the connection is unstable, posing a safety risk. The utility model aims to provide a protective device for edge openings to solve the problems of cumbersome protection operation and unstable connection and eliminate safety risks.
[0005] The utility model is realized by the following technical solutions:
[0006] A protective device for an edge hole, comprising
[0007] A fixed rod group is used to provide stable support;
[0008] An extension rod group is detachably connected to the fixed rod group;
[0009] The middle connecting cable is connected to the fixed rod group to play a protective role;
[0010] The side connecting cable is connected to the extension rod group to play a protective role;
[0011] The fixing assembly is respectively connected with the extension rod assembly and the outside, and is used for stabilizing the positions of the fixing rod assembly and the extension rod assembly.
[0012] As a possible design, the fixing rod set includes an upper fixing rod, a lower fixing rod and a fixing groove.
[0013] The upper fixing rod and the lower fixing rod have the same structure and are arranged opposite to each other, and the two ends of the middle connecting cable are respectively connected to the upper fixing rod and the lower fixing rod;
[0014] There are two fixing grooves, which are respectively arranged on the upper fixing rod and the lower fixing rod, and the fixing grooves are used to accommodate the extension rod group.
[0015] As a possible design, the extension rod set includes a left extension rod and a right extension rod.
[0016] There are two left extension rods, which are respectively mounted on a fixing groove on one side of the upper fixing rod and a fixing groove on one side of the lower fixing rod. There are multiple side connecting cables, and both ends of the multiple side connecting cables are respectively connected to the two left extension rods.
[0017] There are two right extension rods, which are respectively mounted on the fixing groove on the other side of the upper fixing rod and the fixing groove on the other side of the lower fixing rod, and the two ends of the remaining side connecting cables are respectively connected to the two right extension rods.
[0018] As a possible design, the extension rod set further includes a slot and an insert.
[0019] The slots are formed on the left extension rod and the right extension rod. The slots on the left extension rod are formed on the opposite side of the two left extension rods, and the slots on the right extension rod are formed on the opposite side of the two right extension rods.
[0020] The insert block is clamped in the slot, and the two ends of the side connecting cable are respectively fixedly connected to the slots located in the two left extension rods, or the two ends of the side connecting cable are respectively fixedly connected to the slots located in the two right extension rods.
[0021] As a possible design, the cross-sectional shapes of the slot and the plug-in block are both T-shaped.
[0022] As a possible design, the fixing assembly includes a first fixing rope, a second fixing rope and a rope bolt connection gasket.
[0023] One end of the first fixed binding rope is connected to the left extension rod, and the other end is connected to a binding rope bolt connection gasket;
[0024] One end of the second fixed binding rope is connected to the right extension rod, and the other end is connected to a binding rope bolt connection gasket;
[0025] There are multiple number of tie bolt connection washers, which are used to connect to the external building.
[0026] As a possible design, the above also includes a first reinforcement component, which includes a plurality of central fixing hooks. The sides of the upper fixing rod and the lower fixing rod are fixed with a plurality of central fixing hooks, and the central fixing hooks are used to connect the safety net.
[0027] As a possible design, the above also includes a second reinforcement component, which includes a plurality of extension fixing hooks. The sides of the left extension rod and the right extension rod are fixed with a plurality of extension fixing hooks, and the extension fixing hooks are used to connect the safety net.
[0028] As a possible design, the second reinforcement component also includes anti-slip bolts, and there are multiple anti-slip bolts. The multiple anti-slip bolts are respectively threadedly connected to the left extension rod or the right extension rod, and the end of the anti-slip bolt passes through the left extension rod or the right extension rod and abuts against the end of the extended fixing hook.
[0029] As a possible design, the second reinforcement component further includes an anti-dropout plug, which is fixed to the end of the extended fixing hook, and a groove matching the anti-dropout plug is formed at the end of the anti-dropout bolt.
[0030] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0031] The utility model provides a fixed rod group, which can be respectively passed through the vertical rods of the climbing frame and the fixed columns on the main building, and then the extension rod groups on both sides are unfolded and fixed on the fixed rod group, and the side connecting cables are correspondingly inserted and fixed on the corresponding extension rod groups inside and outside by bypassing the gaps between the vertical rods and the columns on both sides, and the central connecting cables and the side connecting cables are matched to form a supporting structure at the edge opening between the climbing frame and the main building, so as to form a strict protection and improve the protection ability of the edge opening. In addition, the extension rod group and the external main building can be connected by the fixing assembly, so as to fix the fixed rod group and the extension rod group, which can improve the connection stability between the device and the external environment and eliminate safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:
[0033] Figure 1 It is a front view of a protective device for edge openings of the utility model;
[0034] Figure 2 It is a three-dimensional diagram of a protective device for edge openings of the utility model;
[0035] Figure 3 It is a schematic diagram of the longitudinal cross-sectional structure of an upper fixing rod of a protective device for edge openings of the utility model;
[0036] Figure 4 It is a schematic diagram of the transverse cross-sectional structure of an upper fixing rod of a protective device for edge openings of the utility model;
[0037] Figure 5 The utility model is a schematic diagram of the cross-sectional structure of a right extension rod of a protective device for an edge opening.
[0038] Marks and corresponding parts names in the attached drawings:
[0039] 1-fixing rod group; 11-upper fixing rod; 12-lower fixing rod; 13-fixing groove;
[0040] 2-extension rod set; 21-left extension rod; 22-right extension rod; 23-slot; 24-insert block;
[0041] 3- Middle connecting cable;
[0042] 4-Side connecting cables;
[0043] 5-fixing assembly; 51-first fixing rope; 52-second fixing rope; 53-rope bolt connection gasket;
[0044] 6-first reinforcement component; 61-central fixing hook;
[0045] 7-second reinforcement component; 71-extension fixing hook; 72-anti-drop bolt; 73-anti-drop plug. DETAILED DESCRIPTION
[0046] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.
[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0048] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.
[0049] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0051] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0052] Example
[0053] This embodiment provides a protective device for edge openings, such as Figure 1-2As shown, it includes a fixed rod group 1, an extension rod group 2, a middle connecting cable 3, a side connecting cable 4 and a fixed assembly 5. The fixed rod group 1 includes a plurality of identical fixed rods, which are detachably connected to the extension rod group 2, and the connection method can be nut connection, clamping, key connection, pin connection or other connection methods. It is connected to the middle connecting cable 3 to form a protective structure to ensure construction safety, and is used to provide stable support for the extension rod group 2 and the middle connecting cable 3; the extension rod group 2 includes a plurality of extension rods, and the plurality of extension rods are connected to the side of the fixed rod group 1 to expand the protection range; the middle connecting cable 3 is preferably made of elastic material, and more preferably, it is an elastic nylon rope, which improves the structural strength while absorbing the impact force through the elastic deformation of the center connecting cable 3 to improve safety. Full protection effect, both ends of which are connected to the fixed rod group 1, so as to play a protective role; the side connecting cable 4 is preferably made of elastic material, more preferably, it is an elastic nylon rope, while improving the structural strength, the impact force is absorbed by the elastic deformation of the side connecting cable 4, so as to improve the safety protection effect, and both ends of it are connected to the extension rod group 2 to play a protective role; the fixing component 5 is respectively connected to the extension rod group 2 and the outside, and the two sides of the specific extension rod group 2 are respectively connected to the main building through the fixing component 5 to form a stable connection, thereby stabilizing the position of the fixed rod group 1 and the extension rod group 2, and further ensuring that the position of the device is relatively fixed to play a good protective role.
[0054] In some embodiments, reference Figure 1-3 The above-mentioned fixing rod group 1 includes an upper fixing rod 11, a lower fixing rod 12 and a fixing groove 13. The upper fixing rod 11 and the lower fixing rod 12 have the same structure and are arranged opposite to each other. The two ends of the middle connecting cable 3 are respectively connected to the upper fixing rod 11 and the lower fixing rod 12. Specifically, the two ends of the middle connecting cable 3 are fixedly connected to the fixing grooves 13 in the upper fixing rod 11 and the lower fixing rod 12. There are two fixing grooves 13, which are respectively opened on the upper fixing rod 11 and the lower fixing rod 12. Specifically, the fixing groove 13 is opened on the side opposite to the upper fixing rod 11 and the lower fixing rod 12. The fixing groove is used to accommodate the extension rod group 2. Preferably, the fixing groove 13 is screwed to the extension rod group 2.
[0055] Preferably, there are multiple middle connecting cables 3, and multiple middle connecting cables 3 are fixed in the middle of the fixing groove 13. The number of the middle connecting cables 3 can be 2, 3, 5 or any number.
[0056] In some embodiments, reference Figure 1-3The extension rod group 2 includes a left extension rod 21 and a right extension rod 22. There are two left extension rods 21, which are respectively mounted on a fixing groove 13 on one side of the upper fixing rod 11 and a fixing groove 13 on one side of the lower fixing rod 12. The two left extension rods 21 are mounted on the same side, and the two left extension rods 21 are respectively connected to the two ends of the same side connecting cable 4 to form a stable protection space. There are multiple side connecting cables 4, and the two ends of several side connecting cables 4 are respectively connected to the two left extension rods 21; there are two right extension rods 22, which are respectively mounted on the fixing groove 13 on the other side of the upper fixing rod 11 and the fixing groove 13 on the other side of the lower fixing rod 12. The two right extension rods 22 are fixed on the same side, and the two ends of the remaining side connecting cables 4 are respectively connected to the two right extension rods 22.
[0057] In some embodiments, reference Figure 1-4 The extension rod set 2 further includes a slot 23 and an insert block 24. The slot 23 is provided on the left extension rod 21 and the right extension rod 22, and the slot 23 is used to snap into the insert block 24. The slot 23 on the left extension rod 21 is provided on the opposite side of the two left extension rods 21, and the slot 23 on the right extension rod 22 is provided on the opposite side of the two right extension rods 22; the insert block 24 is snapped into the slot 23, and there are multiple side connecting cables 4, and the two ends of several side connecting cables 4 are respectively fixedly connected to the slots 23 located in the two left extension rods 21, and the two ends of several side connecting cables 4 are respectively fixedly connected to the slots 23 located in the two right extension rods 22.
[0058] Preferably, a friction sleeve is sleeved on the surface of the plug block 24, and the friction sleeve is connected to the inner wall of the slot 23, which can increase the friction force and improve the anti-slip effect. More preferably, the friction sleeve is made of rubber.
[0059] In some embodiments, reference Figure 1-4 The cross-sectional shapes of the slot 23 and the insert block 24 are both T-shaped, which can prevent the insert block 24 from being easily dislodged under the pulling force of the side connecting cable 4, thereby providing a stable fixing effect for the side connecting cable 4.
[0060] In some embodiments, reference Figure 1-4The fixing assembly 5 includes a first fixing rope 51, a second fixing rope 52 and a rope bolt connection gasket 53. One end of the first fixing rope 51 is connected to the left extension rod 21. The first fixing rope 51 can be a steel rope, a hemp rope or other materials. The other end is connected to a rope bolt connection gasket 53. When there are cast piles or tie bars on the main building, the rope bolt connection gasket 53 is fastened and fixed to the cast piles or tie bars. When there is no fixed object on the inner side of the main building, the rope bolt connection gasket 53 is fixed by nailing expansion bolts on the building body, and then the rope bolt connection gasket 53 is fixed on the expansion bolt to complete the fixation of the device corresponding to the inner side of the main building; one end of the second fixing rope 52 is connected to the right extension rod 22, and the other end is connected to a rope bolt connection gasket 53. The structure and connection relationship of the second fixing rope 52 are the same as those of the first fixing rope 51; there are multiple rope bolt connection gaskets 53, which are used to connect to the external building body.
[0061] In some embodiments, reference Figure 1-4 The above device also includes a first reinforcement component 6, which includes a plurality of central fixing hooks 61. The sides of the upper fixing rod 11 and the lower fixing rod 12 are fixed with a plurality of central fixing hooks 61. The plurality of central fixing hooks 61 are evenly distributed, and the connecting ends of the central fixing hooks 61 are welded to the sides of the upper fixing rod 11 or the lower fixing rod 12 or connected in other ways. There is a gap between the end of the hook and the upper fixing rod 11 or the lower fixing rod 12 to facilitate the corner hanging and fixing of the safety net.
[0062] Preferably, the gap between the end of the central fixing hook 61 and the upper fixing rod 11 or the lower fixing rod 12 is 2-4 cm.
[0063] Preferably, the central fixing hooks 61 are all disposed toward the ground to prevent the safety net from falling out and improve the hooking stability.
[0064] Preferably, the central fixing hook 61 is in a J-shape.
[0065] In some embodiments, reference Figure 1-4 The above device also includes a second reinforcement component 7, which includes a plurality of extension fixing hooks 71. The sides of the left extension rod 21 and the right extension rod 22 are fixed with a plurality of extension fixing hooks 71. The shape of the plurality of extension fixing hooks 71 is the same as that of the central fixing hook 61. The extension fixing hooks 71 are connected to the sides of the left extension rod 21 and the right extension rod 22 by welding, integral molding or other connection methods. There is a gap between the end of the hook and the left extension rod 21 or the right extension rod 22 to facilitate the corner hanging and fixing of the safety net.
[0066] Preferably, the gap between the end of the extended fixing hook 71 and the left extension rod 21 or the right extension rod 22 is 2-4 cm.
[0067] Preferably, the above-mentioned extended fixing hooks 71 are all arranged toward the ground to prevent the safety net from falling out and improve the hooking stability.
[0068] Preferably, the extended fixing hook 71 is in a J-shape.
[0069] In some embodiments, reference Figure 1-5 The second reinforcement component 7 also includes an anti-dropping bolt 72, and there are multiple anti-dropping bolts 72. The left extension rod 21 or the right extension rod 22 is provided with a threaded hole for accommodating the anti-dropping bolt 72 to pass through, and the anti-dropping bolt 72 is connected to the threaded hole, and the end of the anti-dropping bolt 72 passes through the left extension rod 21 or the right extension rod 22 and abuts against the end of the extension fixing hook 71, which can prevent the safety net from falling out. When in use, the corners of the safety net are hung and fixed through the inner and outer edges respectively through multiple extended fixed hooks 71 and the central fixed hook 61, and the safety net is opened to form a more detailed protection. When a person or a heavy object falls, it is caught by the safety net, and then the impact force of the fall is evenly dispersed to the fixed rod group 1 and the extended rod group 2 on both sides through the safety net, the central connecting cable 3 and the side connecting cable 4, effectively reducing the stress on the single safety net connection point, improving the bearing capacity of the safety net, and improving the protection ability of the adjacent hole opening. At the same time, when the adjacent hole opening is long, multiple safety nets are staggeredly mounted on the extended fixed hooks 71 and the central fixed hooks 61 on multiple groups of devices, so that the edges of the safety nets overlap, and the heavy positions can be reinforced by cable ties to improve the safety protection effect.
[0070] In some embodiments, reference Figure 1-5 The second reinforcement component 7 further includes an anti-slip block 73, which is preferably polygonal or circular, and may be a quadrilateral, pentagon, hexagon or irregular shape. The anti-slip block 73 is fixed to the end of the extended fixed hook 71, and the end of the anti-slip bolt 72 is provided with a groove matching the anti-slip block 73, so as to improve the firmness of the connection between the extended fixed hook 71 and the hook anti-slip bolt 72, avoid the misalignment and separation of the extended fixed hook 71 and the hook anti-slip bolt 72 due to excessive force, and reduce the safety hazard of the safety net being unhooked.
[0071] When the device is used, the upper fixing rod 11 and the lower fixing rod 12 are set, and the upper fixing rod 11 and the lower fixing rod 12 can respectively pass through the vertical rod of the climbing frame and the fixed column on the main building, and then the left extension rod 21 and the right extension rod 22 on both sides are unfolded and fixed by positioning fixing bolts, and the side connecting cable 4 is correspondingly inserted and fixed on the corresponding extension rods inside and outside by bypassing the gap between the vertical rods and the columns on both sides, and the central connecting cable 3 and the side connecting cable 4 are matched to form a supporting structure at the edge opening between the climbing frame and the main building, and then the corners of the safety net are respectively connected through the inner and outer edges through a plurality of extension fixing hooks 71 and the central fixing hook 61 After hanging and fixing, the safety net is spread out to form a more detailed protection. When a person or heavy object falls, they are caught by the safety net, and then the impact force of the fall is evenly dispersed to the fixed rod group 1 and the extension rod group 2 on both sides through the safety net, the central connecting cable 3 and the side connecting cable 4, effectively reducing the stress on a single safety net connection point, improving the bearing capacity of the safety net, and improving the protection ability of the adjacent hole opening. At the same time, when the adjacent hole opening is long, multiple safety nets are staggeredly mounted on the extended fixed hooks 71 and the central fixed hooks 61 on multiple groups of devices, so that the edges of the safety nets overlap, and the overlapping positions can be reinforced by cable ties to improve the safety protection effect.
[0072] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A protective device for an edge opening, characterized in that: include The fixed rod group is used to provide stable support; An extension rod group, detachably connected to the fixed rod group; The middle connecting cable is connected to the fixing rod group to play a protective role; A side connecting cable connected to the extension rod group for protection; The fixing assembly is connected to the extension rod group and the outside respectively, and is used to stabilize the positions of the fixing rod group and the extension rod group.
2. A device for protecting an edge opening according to claim 1, characterized in that: The fixing rod assembly comprises an upper fixing rod, a lower fixing rod and a fixing groove. The upper fixing rod and the lower fixing rod have the same structure and are arranged opposite to each other, and the two ends of the middle connecting cable are respectively connected to the upper fixing rod and the lower fixing rod; There are two fixing grooves, which are respectively arranged on the upper fixing rod and the lower fixing rod, and the fixing grooves are used to accommodate the extension rod set.
3. A protective device for edge openings according to claim 2, characterized in that: The extension rod set includes a left extension rod and a right extension rod, There are two left extension rods, which are respectively mounted on a fixing groove on one side of the upper fixing rod and a fixing groove on one side of the lower fixing rod. There are multiple side connecting cables, and two ends of several side connecting cables are respectively connected to the two left extension rods. There are two right extension rods, which are respectively mounted on the fixing groove on the other side of the upper fixing rod and the fixing groove on the other side of the lower fixing rod, and the two ends of the remaining side connecting cables are respectively connected to the two right extension rods.
4. A protective device for edge openings according to claim 3, characterized in that: The extension rod set also includes a slot and an insert block. The slots are provided on the left extension rod and the right extension rod, the slots on the left extension rod are provided on a side opposite to the two left extension rods, and the slots on the right extension rod are provided on a side opposite to the two right extension rods; The insert block is clamped in the slot, and the two ends of the side connecting cable are respectively fixedly connected to the slots located in the two left extension rods, or the two ends of the side connecting cable are respectively fixedly connected to the slots located in the two right extension rods.
5. The edge hole protection device according to claim 4, characterized in that: The cross-sectional shapes of the slot and the plug-in block are both T-shaped.
6. The edge hole protection device according to claim 3, characterized in that: The fixing assembly includes a first fixing rope, a second fixing rope and a rope bolt connection gasket, One end of the first fixed binding rope is connected to the left extension rod, and the other end is connected to a binding rope bolt connection gasket; One end of the second fixed binding rope is connected to the right extension rod, and the other end is connected to a binding rope bolt connection gasket; There are multiple rope-binding bolt connection gaskets for connecting to the external building body.
7. The edge hole protection device according to claim 2, characterized in that: It also includes a first reinforcement component, which includes a plurality of central fixing hooks. The sides of the upper fixing rod and the lower fixing rod are fixed with a plurality of central fixing hooks, and the central fixing hooks are used to connect the safety net.
8. The edge hole protection device according to claim 3, characterized in that: It also includes a second reinforcement component, which includes a plurality of extension fixing hooks. The sides of the left extension rod and the right extension rod are both fixed with a plurality of extension fixing hooks, and the extension fixing hooks are used to connect the safety net.
9. The edge hole protection device according to claim 8, characterized in that: The second reinforcement component also includes an anti-slip bolt, which has a plurality of anti-slip bolts, each of which is threadedly connected to the left extension rod or the right extension rod, and the end of the anti-slip bolt passes through the left extension rod or the right extension rod and abuts against the end of the extended fixing hook.
10. The edge opening protection device according to claim 9, characterized in that: The second reinforcement component also includes an anti-dropout plug block, which is fixed to the end of the extended fixing hook, and the end of the anti-dropout bolt is provided with a groove matching the anti-dropout plug block.